<div class="container"></div>
<style>
/* From Uiverse.io by Ratinax - Tags: circle, multicolor, pattern */
.container {
  width: 100%;
  height: 100%;
  /* Add your background pattern here */
  background-image: radial-gradient(black 75%, transparent 90%),
  linear-gradient(45deg, red, green, yellow);
  background-size: 3em 3em;
  /* background: lightblue; */
}
</style>
